###
 # @Descripttion: 
 # @version: 
 # @Author: 王政乔(https://www.zhengqiao.wang/)
 # @Date: 2020-03-31 12:13:56
 # @LastEditors: 王政乔(https://www.zhengqiao.wang/)
 # @LastEditTime: 2020-03-31 12:32:10
 ###
#!/bin/bash

###
 # @name: 变量调用
 # @msg: 
###
WEBSITEURL="https://www.zhengqiao.wang/"

echo ${WEBSITEURL}
echo $WEBSITEURL

###
 # @name: 只读变量调用  
 # @msg: 
###
# 非只读变量可以修改
WEBSITEURL="https://me.zhengqiao.wang/"
echo $WEBSITEURL
# 只读变量不可修改
readonly AUTHER_NAME="王政乔"
echo $AUTHER_NAME
AUTHER_NAME="新的王政乔"
# 删除变量
unset WEBSITEURL
echo $WEBSITEURL
unset AUTHER_NAME
echo $AUTHER_NAME
